[llvm-dev] LLVM code coverage build problem - LLVM_BUILD_INSTRUMENTED_COVERAGE

[Friedman, Eli via llvm-dev]

On 8/30/2017 11:19 AM, Ravi David via llvm-dev wrote:
> [  0%] Building CXX object 
> utils/PerfectShuffle/CMakeFiles/llvm-PerfectShuffle.dir/PerfectShuffle.cpp.o
>
> gcc: error: unrecognized command line option 
> ?-fprofile-instr-generate=%4m.profraw?
>
> gcc: error: unrecognized command line option ?-fcoverage-mapping?
>

gcc doesn't support -fprofile-instr-generate; if you want to use it, you 
have to compile LLVM with clang.  (See 
https://clang.llvm.org/docs/SourceBasedCodeCoverage.html .)

If you want to use gcov/lcov, you can use "CXXFLAGS=--coverage" or 
something like that.

-Eli

-- 
Employee of Qualcomm Innovation Center, Inc.
Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project

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